Tripeptides are a special class of peptides – consisting of exactly three amino acids. In the field of nutritional supplements, they are gaining importance primarily as a high-quality form of collagen peptides. In Austria, interest in high-quality supplement products is continuously increasing; search queries such as collagen tripeptide effects, tripeptide supplement Austria or buy highly concentrated collagen reflect this trend.
Note: Nutritional supplements are not medicines and are not intended to treat, cure or prevent diseases. All information in this article is for general knowledge transfer only.
What are tripeptides?
Tripeptides consist of three amino acids linked by peptide bonds. In the context of collagen supplements, the following tripeptides are particularly relevant:
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Gly-Pro-Hyp (Glycine-Proline-Hydroxyproline): The most common tripeptide in hydrolyzed collagen
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Pro-Hyp and Hyp-Gly: Dipeptides that also occur in collagen hydrolysates and are being investigated in research
The decisive difference to conventional collagen peptides lies in the molecular size: Tripeptides are smaller than standard collagen peptides (typically: 3,000–5,000 Daltons) and are therefore said to have higher bioavailability.
State of research: What does research know?
A study (Iwai et al., Journal of Agricultural and Food Chemistry, 2005) showed that collagen dipeptides and tripeptides such as Pro-Hyp are detectable in human blood after oral intake – an indication of intestinal absorption. The clinical relevance of these findings is still subject to further research.
A study (Ohara et al., Journal of Dermatology, 2010) investigated the effect of collagen tripeptides on skin moisture and elasticity. The results are promising, but larger, independent replication studies are required.
EFSA status: There is no approved Health Claim for collagen tripeptides according to the EU Health Claims Regulation (HCVO/EC 1924/2006). Statements such as "improves skin" or "strengthens joints" are not permitted as food supplements in Austria and throughout the EU.
Tripeptides vs. Standard Collagen Peptides
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Standard collagen hydrolysate: ~3,000–5,000 Da, well-researched (especially skin, joints), moderate price
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Collagen tripeptides: ~300 - 500 Da, potentially higher bioavailability, research in early phase, higher price
Relevance for the Austrian market
In Austria, food supplements are subject to the Austrian Food Supplement Ordinance (BGBl. II No. 88/2004) as well as EU-wide regulations. For consumers in Vienna, Graz, Salzburg and other Austrian cities, the following applies:
- Products must be registered with the AGES (Austrian Agency for Health and Food Safety)
- Health claims are only permitted if they are on the EFSA list of approved claims
- Imported products from third countries must demonstrate EU conformity
What to look for when buying
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Molecular weight declared: Indication in Daltons (Da) – the lower, the smaller the peptide
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Manufacturing process: Enzymatic hydrolysis or fermentation indicated?
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Animal source: Bovine (bovine collagen), fish (marine collagen) or porcine – clearly declared
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GMP certification: Ideally EU-GMP or ISO-certified
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Third-party laboratory analyses: Independent certificates for heavy metals, pesticides and microbial contamination
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No inadmissible claims: Reputable suppliers refrain from making health claims not approved by EFSA
Conclusion
Collagen tripeptides are a scientifically interesting further development of classic collagen peptides with potentially higher bioavailability. However, research is still in its early stages. For consumers in Austria: quality, EU conformity and realistic expectations are crucial.
